Math 1064, Checkup 2

What is the identity element for the addition of fractions?

0

Write the answer in simplest form. 4 5/18 - 2 11/18 =

1 2/3

The Honor Roll students spent 3/4 of their day at the park. The girls spent 1/9 of their time helping to prepare the food and drinks for the picnic lunch. How much of their school day was spent preparing for lunch?

1/12

Write the answer in simplest form. 5/9 x 3/10 =

1/6

Christi, Sandy, and Miriam cut the cakes for the picnic. There were 96 pieces of cake in all. 84 pieces of cake were eaten. What was the ratio of pieces of cake that were not eaten to pieces of cake that were eaten? Write the answer in simplest form.

1/7

Write the answer in simplest form. 1/5 x 5/9 =

1/9

Write the answer in simplest form. 2/5 x 25 =

10

What is the Least Common Multiple of 6 and 9?

18

Write the next eight multiples of 6. 6, 12,

18, 24, 30, 36, 42, 48, 54, 60

Write the next eight multiples of 9. 9,

18, 27, 36, 45, 54, 63, 72, 81

Write three multiples that 6 and 9 have in common.

18, 36, 54

Write the answer in simplest form. 13 2/3 + 5 4/9 =

19 1/9

Write the answer in simplest form. 18 1/10 + 1 1/4 =

19 7/20

Honor Roll students from Highland and Harmony Schools joined together for a picnic and an activities day at the park. Ace and Racer were teamed together for a relay race. In the race, Ace ran for 1 2/5 minutes; Racer ran for 1 1/3 minutes. How many minutes did both boys run in the race?

2 11/15

For the number sentence 1/5 + 3/5 = 4/5, write a number sentence using the commutative property.

3/5 + 1/5 = 4/5

Write the answer in simplest form. 7 1/12 - 2 7/8 =

4 5/24

Write the answer in simplest form. 10/21 x 14/15 =

4/9

Write the answer in simplest form. 5/6 x 10 =

8 1/3

Write the answer in simplest form. 9/14 x 6/15 =

9/35

Write the answer in simplest form. 10 5/12 + 11/12 =

11 1/3

Write the answer in simplest form. 3/8 x 40 =

15

Write the answer in simplest form. 11 1/5 - 3 2/3 =

7 8/15

Write the answer in simplest form. 9/11 x 7/18 =

7/22

The Least Common Denominator is the ______ _________ __________ of the denominators.

Least Common Multiple

When you add or subtract fractions, always look at the ____________ to see if the fractions are like or unlike fractions.

denominators

Does the associative property apply to the addition of fractions?

yes